Detachable and portable light-holder.



W. H. SAOKMAN. DETAGHABLE AND PORTABLE LIGHT HOLDER.

APPLICATION FILED JUNE 11,1908.

958,440. Patented May 17,1910.

amcwtoz UNITED STATES PATENT OFFICE.

WILLIAM H. SACKMAN, OF COCHRANTON, PENNSYLVANIA, ASSIGNOR T0 PENNSYL-VANIA SPECIALTY MANUFACTURING 00., OF COGHRANTON, PENNSYLVANIA.

DETACHABLE AND PORTABLE LIGHT-HOLDER.

To all whom it may concern:

Be it known that I, WILLIAM H. SACK- MAN, a citizen of the UnitedStates, residing at Cochranton, in the county of Crawford and State ofPennsylvania, have invented certain new and useful Improvements inDetachable and Portable Light-Holders; and I do declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

My invention relates to portable lamps and particularly to portable lampsupports.

The object of the invention is the provision of a device of thischaracter which is adapted to be removably secured upon the base ortable of lathes, planing machines or the like.

Another object of the invention is to provide a device of this characterwhich may be adjusted in all positions, whereby the bulb may beconveniently moved so as to obtain light at different points.

A still further object of the invention is the provision of a simple,cheap and efiicient device with convenient means for attaching a lampsupporting mechanism to a suitable support.

\Vith these and other objects in view, the invention consists of certainnovel features of construction, combination and arrangement of parts, aswill be more fully described and particularly pointed out in theappended claims.

In the drawings, Figure 1 is an elevation of the lamp holder withportions in section to illustrate its application; Fig. 2is an elevationtaken at right angles to Fig. 1; Fig. 3 is a horizontal section taken onthe line 33 of Fig. 2; Fig. 4 is a detail perspective view of the baseplate; Fig. 5 is a section on line 55 of Fig. 2, showing how the lampholder is locked to the base plate; Fig. 6 is a similar section on theline 5-5 of Fig. 2, showing the locking rod in released position.

Referring more especially to the drawings, 1 represents a base orsupport which, in this instance, is indicated as the raised guide of alathe having a central longitudinal slot 2, formed therein. The base ofthe lamp support is shown at 3 and is provided with a dependinglongitudinal rib 4, adapted to enter the slot 2 in the support and toSpecification of Letters Patent. Patented lay 17, 191() Applicationfiled June 11, 1908.

Serial No. 438,003.

provide a guide for the sliding of the base upon the support. This ribor flange 4, is cut away to form a screw receiving slot 5, with one wallthereof inclined as shown at 6, to form a surface, against which the camsurface 7 of a screw bolt 8, is adapted to bear. This screw bolt passesup through the slot, where it is provided with a tension nut 9, adaptedto rest upon the upper face of the base and to draw the inclined surface7 of the bolt against the inclined surface 6 of the base, whereby itsouter vertical edge 10, will engage the adjacent wall of the slot 2, andclamp the base to the support. When the nut 9 is operated so as todisengage the cam face 7 of the screw 8 from the cam face 6 of the base,the screw is loose within the slot and in order to prevent the same frombecoming disengaged therefrom, I provide a screw 11 having a flat side12 which, when properly turned, is flush with the side walls of the slot5 and will permit the removal of the flat screw 8. However, if it isdesired to hold the screw in position within the slot, the screw 11 isturned so that its round head will overhang the wall of the slot and prevent the removal of the screw 8.

Extending vertically through the base and rib at, is a circular hole 13,in which is secured a supporting standard 14, by means of a locking key15, which is seated within a bored-out portion 16, in the standard, sothat the key will project slightly beyond the periphery of the standard.In Figs. 5 and 6, it will be seen that the key 15 is flattened on oneside, or in other words, is given the arc of a circle greater than itsperiphery, so as to conform when in normal position, with the peripheryof the standard 14. When the key is turned in the standard, however, theflat side is moved inwardly and the circular portion thereof projectsbeyond the pe riphery of the standard and engages the walls of the hole13 in the base and holds the standard in locked position.

The upper portion of the standard is provided with adjustable bracketarms 17 which are arranged to support the lamp 18, in a plurality ofadjusted positions, whereby the light may be conveniently turned to allpoints within the radius of the length of the arms.

From the foregoing description, taken in connection with theaccompanying drawings, the construction and operation of the inventionwill be readily understood Without requiring a more extendedexplanation.

Various changes in the form, proportion and the minor details ofconstruction may be resorted to Without departing from the principle orsacrificing any of the advantages of this invention.

Having thus described my invention, What I claim is:

1. In a lamp supporting device, the combination with a base or support,of a notched and apertured body, said notch having an inclined Wall, aWedge plug seated in said notch, means to operate said plug to clamp thebody on the support, a standard seated in said aperture, and means tohold the standard in adjusted position on the body.

2. In a lamp supporting device, the combination with a base or support,of a notched and apertured body, said notch having an inclined Wall, aWedge plug seated in said notch, means to operate said plug to clamp thebody on the support, a standard seated in said aperture and comprising aplurality of pivoted arms, and a cam bolt carried by the standard forholding the same in adjusted position in the aperture of the body.

In testimony whereof I have hereunto set my hand in presence of twosubscribing Witnesses.

WILLIAM H. SACKMAN.

Witnesses:

O. A. PETERs, F, A. (loans.

